Wheel dog



Jan. 15, 1924. 1,480,966

B. STOCKWELL WHEEL DOG Filed on. 26. 1922 BEE i amvewl'oo 5i imc/rwaL Patented Jan. 15, 1924.

UNITED STATES PATENT orrice.

BERT STOCKWELL, F TACOMA, WASHINGTON, ASSIGNOR OF, ONE-HALF TO GEORGE H. I

GARR-ISH, OF TACOMA,WASHINGTON.

WHEEL DOG.

Application filed October 26, 1922; Serial Kim-597,156.

To all whom it may concern:

Be it known that I, BERT STOCKWELL, a citizen of the United States, residing at T3.- coma, in the county of Pierce and State of .Vashington, have invented certain new and useful Improvements in IV heel Dogs; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to-make and use the same.

My invention relates to improvements in what are commonly known as wheel dogs, for the purpose of holding car wheels against the rails, while the trucks are being resides in the novel construction hereinafter described and claimed, the description being supplemented by the accompanying drawin s:

Figure 1 is a perspective view of my invention in use.

Fig. 2 is a side elevation.

Fig. 3 is a vertical sectional view taken substantially on line 3-3 of Fig. 2.

In the construction shown, the numeral 1 designates a horizontal base-plate to support any form of lifting jack J, one edge of said plate being provided with an integral upstanding post 2 which is of hollow formation and is by preference rectangular at both its interior and exterior, the upper end of said post being provided. at one side with a pair of integral parallel laterally extending ears 3. Preferably, the upper end of the post 2 is notched between the ears as indicated at 4. V

A suitable shank 5 is slidably received in the post 2 and isprovided at its upper end with a laterally extending dog or jaw 6 to engage the car wheel W as shown in Fig. 1. The side of the shank 5, adjacent the ears 3, is provided with a plurality of upwardly facing ratchet teeth 7 which cooperate with a downwardly beveled nose 8 extending through the notch 4 from the upper end of a vertical arm 9, said upper end of said arm being pivotally mounted between the ears 3, by means of a suitable pivot pin 10.

The lower end ll of the arm 9 is weighted,

causing it to normally hang vertically slidable pin or dog to engage the ratchet teeth of the shank. When the tooth engaging end of this pin or dog becomes slightly worn, upward pull on the shank often causes retraction of said pin ordog against the tens sion of its projecting spring, thereby accidentally releasing the shank and causing a great deal of trouble which isobviated by the present invention. I

In operation, the base-plate 1 is placed upon a tie or other horizontal surface adjacent the rail upon which the wheel W is supported. Then, the shank 5 is depressed V until the jaw 6 engages the wheel as shown in Fig.1, it being understood that the arm 9 will swing outwardly under the influence of the coacting beveled surfaces of the teeth 7 and thenose 8. The jack J may now be set. upon the base-plate l and operated to raise the truck for renewing bushings or making other required repairs or ad ustments. During this operation, the dog or jaw 6-positively prevents upward movement. of the wheel with the truck frame. as now often occurs.

Attention is directed to the fact that the invention is of extreme simplicity and consists only of three parts which may be readily manufactured with ease. Regardless of these advantages however, the invention is extremely efiicient and reliable and cannot possibly be released accidentally by an upward pull on the shank 6, as all tendency of the shank to move upwardly, pulls upon the nose 8 and tends to rock the arm 9 inwardly toward the post, thus-increasing the gripping action of the nose upon the shank.

The exact details disclosed have proven' highly efficient and desirable in actual prac- 105 tice and hence they are preferably followed,

but within the scope of the invention as claimed, numerous minor changes may be made r I claim 1 V 7 1. A device of the class described comprising-a base-plate to support a lifting jack, a hollow vertical post integral with and rising from said base-plate, the upper end of said post having a pair of spaced parallel laterally extending ears, a vertical shank slidable in said hollow post and having a laterally extending jaw at its upperend, one side of said shank having upwardly facing ratchet teeth at the side of the post provided with said ears, an upright arm having its upper end received between sa' 1 ears and provided with a down wardly beveled lateral nose engaging said ratchet teeth, I and a pivot pin passing through said ears and arm to pivotally mount th latter, the lower end of said arm being weighted to normally hang vertically against said post, positively preventing swinging of said arm when an upward pull :0 exerted on said shank.

2, A device of, the character described comprising a base plate, a vertical post ris= ing therefrom, a vertically disposed shank slidably connected with said post and having a laterally disposed jaw at its upper with upwardly facing ratchet teeth, and an upright arm pivotally mounted at its upper end on said post and provided with a downwardly beveled laterally disposed nose engaging said ratchet teeth, the lower end of said arm being weighted to normally hang vertically against said post and to positively prevent swinging of said arm when an upward pull is exerted on said shank.

In testimony whereof aiiiaed my signature.

BERT STOCKWELL.

I have hereunto end, saidshank being provided on one side 

